Chapter ONE Chemistry PDF

Preview

Summary

Download Chapter ONE Chemistry PDF

Description

Chapter 1 - Matter and Measurement 1. Which is not an example of pure substance? A) Sugar *B) Air C) Aluminum foil D) Water E) A block of dry ice 2. Which is an example of physical change? A) The rusting of an iron nail B) The burning of propane in a gas grill C) Baking cookies D) Polishing tarnished silver *E) Melting of an ice cube in a glass of soda 3. Which measurement has the fewest number of significant figures? A) 12.80 m B) 0.1280 m C) 0.001280 m

Page 1

Chapter 1 - Matter and Measurement

*D) 1280 m E) All of the measurements have the same number of significant figures. 4. Which quantity is an exact number? *A) 3 cars B) 1,000 m C) 2 L D) 453.6 g 5. The number 0.0079400 expressed correctly using scientific notation is A) 0.007940 B) 7.9400 *C) 7.9400  10–3 D) 7.9400  10–4 E) 7.940  10–3 6. When 4.870  10–3 is correctly converted to its standard form the number becomes _____. A) 4870 B) 4870. C) 0.00487 *D) 0.004870 E) 0.0004870 7. Which number is the largest? *A) 4.38  103 B) 4.38  102 C) 4.38  10–3 D) 4.38  10–2 E) 438 8. When 5.5490  108 is correctly rounded to three significant figures the number becomes _____. A) 5.55 *B) 5.55  108 C) 555 D) 554 E) 5.54  108 9. Which number has four significant figures? *A) 3.978 B) 0.780 C) 0.0085 D) 1700 E) Two or more of the above numbers have four significant figures.

Page 2

Chapter 1 - Matter and Measurement

10. What is the correct answer to this calculation, reported using the proper number of significant figures: 610.348 + 7.09 + 96.9192 – 143.6? A) 570.757 B) 570.7572 C) 570.76 *D) 570.8 E) 858.0 11. What is the correct answer to this calculation, reported using the proper number of significant figures: 26.927  62.2? A) 1674.8594 B) 1674.86 C) 1674.9 D) 1675. *E) 1.67  103 12. What is the metric relationship between milliliters and microliters? A) 1 milliliter = 1 microliter B) 1,000 milliliters = 1 microliter *C) 1 milliliter = 1,000 microliters D) 1,000,000 milliliters = 1 microliter E) 1 milliliter = 1,000,000 microliters

Page 3

Chapter 1 - Matter and Measurement

13. Which is the proper conversion factor for converting pounds (lb) to grams (g)? A) 1 lb / 454 g B) 1 g / 454 lb *C) 454 g / 1 lb D) 454 lb / 1 g 14. Which length is the longest? A) 12 m B) 12,000 mm C) 12,000 m *D) 12,000 cm E) 0.0012 km 15. What is the mass in kilograms of an individual who weighs 157 lb? A) 157 kg B) 7.10 kg *C) 71.0 kg D) 71 kg E) 347 kg 16. In a balloon with a volume of 21.55 cups, what is the volume of this balloon in L? A) 86.20 L B) 81.32 L C) 5.711 L D) 5.388 L *E) 5.083 L 17. If a package of nuts weighs 41.3 oz, what is the mass of package reported in milligrams? A) 1.17 mg B) 1.17  103 mg *C) 1.17  106 mg D) 1.45  103 mg E) 3.00  105 mg 18. If a tree is 89.5 cm tall, what is the tree's height reported in yards? *A) 0.979 yd B) 6.31 yd C) 18.9 yd D) 35.2 yd E) 227 yd 19. If a piece of rock that has a volume of 0.73 L and a mass of 1524 g, what is the density of the rock in g/mL? A) 2.1  103 g/mL B) 0.48 g/mL C) 4.8  10–4 g/mL

Page 4

Chapter 1 - Matter and Measurement

*D) 2.1 g/mL E) 2.088 g/mL 20. A child had a body temperature of 101.8 °F. What is her body temperature in °C? A) 24.6 °C *B) 38.8 °C C) 38.78 °C D) 56.56 °C E) 311.9 °C 21. The recommended dietary allowance for calcium for teenage children is 1,300 mg per day. If typical 8.0-fl oz glass of reduced-fat milk contains 298 mg of calcium, how many fluid ounces of milk does a teenager need to drink to get the entire recommended amount of calcium from this milk? A) 4.4 fl oz B) 1.8 fl oz C) 3.5 fl oz *D) 35 fl oz E) 32 fl oz 22. PVC plastic, which is used in pipes, is an example of a synthetic material. *A) True B) False 23. Nitrogen gas is an example of a compound. A) True *B) False 24. An inexact number results from a measurement or observation and contains some uncertainty. *A) True B) False 25. When the liquid carbon tetrachloride (density = 1.59 g/mL) is added to water, the top layer will be the water layer. *A) True B) False 26. Dissolving sugar in water involves a chemical change. A) True *B) False 27. One Kelvin is the same size as one degree Celsius. *A) True B) False

Page 5

Chapter 1 - Matter and Measurement

28. The temperature – 60 °C is higher than – 60 °F. A) True *B) False 29. A mixture can be separated into its components by physical changes. *A) True B) False 30. A ___________ converts one material to another. A) physical change *B) chemical change C) physical property D) chemical property

Page 6...